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Phone	Samsung Transform	ZTE Force	Samsung SGH-T101g	Apple iPhone 3GS	Microsoft Lumia 550
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	3.5" diag. 5 : 3	4" diag. 5 : 3	1.5" diag. 1 : 1	3.5" diag. 5 : 3	4.7" diag. 16 : 9
Display Resolution & Type	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	128 x 128 pixels (~121 ppi) LCD (Color)	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)	720 x 1280 pixels (~312 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	60 Hz	?	60 Hz	?
Battery	1,500 mAh	1,735 mAh	800 mAh	?	2,100 mAh
Processor	800 MHz Samsung S3C6410, Qualcomm QSC6085	1.5 GHz Qualcomm Snapdragon S4 Plus MSM8960	?	?	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM	?	1 GB	?	?	1 GB
Storage	? raw hardware	4 GB	? raw hardware	32 GB *	8 GB
Main Camera	3 megapixel	5 megapixel	-	3 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QVGA (320 x 240)	720p HD	-	VGA (640 x 480)	720p HD
Front Camera	Yes	1 megapixel	-	-	2 megapixel
Weight	5.37 oz (152g)	5.4 oz (153g)	2.47 oz (70g)	4.76 oz (135g)	5.01 oz (142g)
Dimensions	4.61" x 2.42" x 0.61" (117 x 61 x 15.5 mm)	4.88" x 2.54" x 0.47" (124 x 65 x 11.9 mm)	4.07" x 1.77" x 0.59" (103 x 45 x 15 mm)	4.55" x 2.44" x 0.48" (116 x 62 x 12.3 mm)	5.36" x 2.67" x 0.39" (136 x 68 x 9.9 mm)
Form Factor	Slide	Slab	Slab	Slab	Slab
Platform / OS	Android	Android	(proprietary)	iOS	Windows
Network Bands	CDMA: 850, 1900	4G LTE: 25 CDMA: 800, 850, 1900	GSM: 850, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	4G LTE: 2, 4, 5, 7, 12, 17 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	EVDO rA	LTE (Cat 3)	GPRS	HSPA 7.2	LTE (Cat 4)
Features
Flashlight	-	-	-	-	Yes
GPS / Location	n/a	n/a	-	n/a	n/a
Accessibility
Adjustable Text Size	n/a	n/a	-	n/a	n/a
Hearing Aid Compatible	Yes M4, T3 (mostly tele-coil compatible)	Yes M4, T3 (mostly tele-coil compatible)	-	-	Yes M3, T4 (very tele-coil compatible)
Multiple Languages	n/a	n/a	Yes	n/a	n/a
TTY/TDD (Digital)	Yes	Yes	-	Yes	Yes
Alerts
Ringer Profiles	-	-	Yes	-	-
Connectivity
Bluetooth	Yes	Yes	-	Yes	Yes
Mobile Hotspot	n/a	n/a	-	n/a	n/a
NFC	-	Yes	-	-	-
USB	Yes Micro-USB	Yes Micro-USB	Yes	Yes	Yes Micro-USB
Wi-Fi	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)	-	Yes 802.11 b,g	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	n/a	-	n/a	n/a
Ringer ID	n/a	n/a	-	n/a	n/a
Voice Dialing	n/a	n/a	-	n/a	n/a
Customization
Custom Graphics	n/a	n/a	Yes	n/a	n/a
Custom Ringtones	n/a	n/a	Yes	n/a	n/a
Real-Music Ringers	n/a	n/a	-	n/a	n/a
Data & Network
Data Tethering	n/a	n/a	-	n/a	n/a
WAP / Web Browser	n/a	n/a	Yes	n/a	n/a
Input
Predictive Text Entry	n/a	n/a	Yes	n/a	n/a
Side Keys	Yes	Yes	-	Yes	Yes
Text Keyboard, Hardware	Yes	-	-	-	-
Touch Screen	Yes Capacitive	Yes Capacitive	-	Yes Capacitive	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	-	-	Yes
Messaging
Email Client	n/a	n/a	-	n/a	n/a
Instant Messaging	n/a	n/a	-	n/a	n/a
MMS	n/a	n/a	-	n/a	n/a
Text Messaging Templates	n/a	n/a	Yes	n/a	n/a
Music
FM Radio	-	-	-	-	Yes
Headphone Jack (3.5mm)	Yes	Yes	-	Yes	Yes
Music Player	n/a	n/a	-	n/a	n/a
Photo & Video
TV Output	-	-	-	Yes	-
Productivity
Alarm	n/a	n/a	Yes	n/a	n/a
Calculator	n/a	n/a	Yes	n/a	n/a
Calendar	n/a	n/a	Yes	n/a	n/a
To-Do List	n/a	n/a	-	n/a	n/a
Voice Memo	n/a	n/a	-	n/a	n/a
Software
Games	n/a	n/a	-	n/a	n/a
Voice
HD Voice	-	Yes	-	-	Yes
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	Samsung Transform	ZTE Force	Samsung SGH-T101g	Apple iPhone 3GS	Microsoft Lumia 550
	X >	< X >	< X >	< X >	< X

NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	Samsung Transform	ZTE Force	Samsung SGH-T101g	Apple iPhone 3GS	Microsoft Lumia 550